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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 27, 2012
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for All Makes and Models
Help Request Answers
2002 Audi A4 Quattro Avant 1.8L No Start, Poor Idle Quality, MIL Lamp on VIN: WAUVC68E72
Got a beast here that wont communicate. Weve used several different scanners and with the exception of a generic OBD2 scan with our Verus we cant get any communication with any modules in the vehilce. The customers complaint is a hard start and rough idle with... Trouble codes: P0108, P0104, P0102, P0101, P0110
2003 Audi S6 Avant 4.2L Unknown VIN: WAUXU64B13
we have this car that vibrates at 60mph getting worse the faster you go. vibration seems as though its coming from the rear. we swapped tires and found no difference in severity of vibration. we ran the vehicle on the hoist and tooks the tires off to eliminate...
1994 BMW 318i 1.8L Air bag VIN: ABMCA98010
Hi everyone Hope someone can give me some info on this car. It a E36 318i "South African import. Air bag light on steering wheel, its go a 3 spoke steering wheel and the air bag light is on the vertical spoke down the bottom. It dose a self test and the lig...
2006 BMW M5 5.0L clutch valve VIN: WBSNB93516
New customer had car towed from dealer to us, dealer wanted to replace everything in the SMG hydraulics and flywheel/clutch setup. The yellow cog comes on dash while driving, and as you continue driving, it becomes the red cog with half engine(limp home). Veri...
2005 Cadillac STS 3.6L No Start VIN: 1G6DW67785
Car will not crank over, has no communications with any of the modules, came in with dead battery, have charged the cars battery and replace the battery in the fob. I am unable to pull any codes due to no communications. All fuses and relays test OK and I am a...
1997 Chevrolet Monte Carlo LS 3.1L engine VIN: 2G1WW12M4V
Hello again gm techs. This Monte Carlo came in as a no start. 4 times it started and ran for about 30 seconds. the last time it ran i watched the rpm reading on the scanner drop to zero just before it quit. It will show the 24x sensor staying at 163480. No rea...
2001 Chevrolet Express 2500 5.7L No Start VIN: 1GCGG25R21
Thanks to everyone for their time and input. I have this 01 Chevy Van with a 5.7L that VERY intermittently will not start. When it won't start (I finally got it to do it to me once in the past 2 weeks) it has no fuel pressure. I was set on it and ready to chec...
2003 Chevrolet Silverado 2500 HD 6.0L Misfire, MIL Lamp on VIN: 1GCHK24U03
I have a 6.0 gas in a plow truck that is driving me crazy. I did full tune up in it last fall and replaced both exhaust manifolds since they had broken apart and the studs had corroded off. After doing all of that the truck definetly ran better than it did whe... Trouble codes: P0300 (Random cylinder misfire)
2004 Chevrolet Tahoe LS 5.3L Transfer Case Control Module VIN: 1GNEK13Z74
Help all gm techs!! tahoe came in with intermittant code c0550. Suggested replacement of transfer case control module and programming new module per tsb #02-04-21-006e. Recieved and installed new module, requested info with tech 2 and downloaded latest calibra...
2006 Chevrolet C4500 Kodiak C4C042 6.6L Hvac VIN: 1GBE4C1216
Hi folks, I'm in need of some assistance with the blower motor/manual HVAC system on this truck. I don't have any tech info or wiring diagrams to diagnose this problem. I'm not getting any action out of the HVAC system, the blower motor resistance/relay pack ...
2000 Dodge Dakota 4.7L MIL Lamp on VIN: 1B7GG22N1Y
First Replaced Coolant Temp Sensor P0118 Comes Back With in Seconds Of Clearing PCM C1 Connector Pin 17 5V Supply Only Shows Up .01V. Is This A Bad PCM Or Where DOes The 5V supply come from? Trouble codes: P0118, P1281
2001 Dodge Grand Caravan Sport 3.3L control panel VIN: 2B4GP44311
This Grand Caravan heater does not warm up. The heater hoses get very hot, so the core should not be plugged. The fan for front and rear work, the compressor comes on when requested, but the air blows cool, and when A.C. button is pushed, blows cold. Also, the...
2000 Ford Ranger XL 2.5L engine VIN: 1FTYR14C7Y
Replaced thormostat twice, then replaced housing with Motorcraft. Wants to run 120 degrees farenheit. Removed fan to allow temperature raise enough to push any remaining air to resevoir. Still runs cold driving on highway. Backflushed core, has heat if and whe...
2003 Ford Taurus LX 3.0L 1-2 and 2-3 shift VIN: 1FAFP55U03
Long sad story. We have done many of these taurus/windstar AX4Ns in the past with stripped pump shafts. Never had a problem, the miles were so low on this car I almost just put a converter in it, but wanted to make sure it was all Ok. I have a friend locally w...
2005 Ford F-150 FX4 5.4L Starting VIN: 1FTPW14505
Have this F-150 with a no crank. We have code B1681 but we cant find the pats module. Alldata shows center behind dash. We also looked by the fuse block passenger kick panel. We can jump starter solenoid and truck cranks over. Any tips on module location is ap...
2005 Ford Five Hundred Limited 3.0L Hesitation, Low power VIN: 1FAFP28125
Thanks to all, the car has no power.Can only get about 2500 rpm and 35-40 mph on the road. The car is from the body shop next door. It took a very light front enf hit (gill and hood damage).I was told that the owner drove car for about a week. then lost powe...
2006 Ford F-150 King Ranch 5.4L head VIN: 1FTPW12V26
Ok, Ford guys. I have a 06 F150 King Ranch 5.4 3V motor. I need advise more than anything.. I have three plugs that are broke off in the head, Yes I have the tool to extract them. but one IS and WILL not come out. So now I am sure I have to pull the head howev...
2006 Ford E-450 Super Duty 6.0L cooling system VIN: 1FDXE45P46
ATN techs,I have an 06 e450 with a 6.0 turdo diesel.Upon idling after about 20 min, coolant is being forced out of the "DE GAS" bottle.System holds pressure and it has a new ford radiator cap.When cold (sitting over night)I can remove the cap,reinstall and run...
2006 Ford E-350 Super Duty 6.0L No Start VIN: 1FDWE35P06
Vehicle came as a no start from anther shop.Customer told me the Mechanic had installed a hps pump & I did verify it.First thing I did was verify that the crank case had oil is was full.i hook up my scan tool while cranking & looking @ few pids.i have good RPM...
2007 Ford F-150 King Ranch 5.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTPW12V17
This truck was brought to us two months ago with what appeared to be a misfire. We determined that it needed new plugs and boots. After repacement the truck ran better and smoother. Truck was again brought back to us about one month later with a faint gasoline... Trouble codes: P0420
2008 Ford Taurus SEL 3.5L running lean VIN: 1FAHP24W28
hi this car has both lean codes i have changed the ocv valve because i have found no other problems stfuel trims are very irattic swinging from 0 to 20 and lgterm fuel trims are at 25.8 percent on both banks i have reset the kam memory to reset long term fuel ... Trouble codes: P0171, P0174
2010 Ford Ranger XL 4.0L Starter ?? VIN: 6FPAAAJGCM
Note - this is not a ranger, it's a falcon ute. I can't enter the vin and won't let me go pass the model selection. Has any one out their come across similar symptoms before and what was inspected? Thanks
2007 GMC Yukon Denali 6.2L Poor Idle Quality VIN: 1GKFK63817
Cleaned throttle body and idle now sits at 1800-2000 when put in drive settles down. tap gas goes back up. my snap on verdict has an idle learn reset but as commonly seen it's not working. anybody know how to reste idle manually. I heard you have to hold gas p... Trouble codes: P0121, P2119, P2135
1999 Honda Accord LX 2.3L Steering VIN: 1HGCG5647X
i know i have come across this but can't remember the cure we got this Honda that pulls to the left ,but not hard only when on the throttle,when you let off the gas it will go to the rite again not bad but it's there, the harder you hit the gas the worse it is...
2003 Honda Pilot EX 3.5L countershaft speed sensor VIN: 2HKYF18623
We just put a rebuilt transmission in this Pilot. when finished during test drive check engine light came on which scanner indicated code 09-01 (P0720) Output shaft (countershaft) speed sensor failure. We found a wire to the connecter for the sensor broke off,...
2003 Honda Element DX 2.4L unknown VIN: JTD1348953
Thanks to all in advance. Customer complained of a knocking noise in the right front while turning. Test drove and duplicated noise especially when doing parking lot manuvers. I did front and rear stabilizer links and bar bushings 6 months ago or so but this c...
2004 Hyundai Sonata 2.4L Alternator Belt VIN: KMHWF25S64
Hi guys, this car has a belt squeal when starting up mostly cold but will occur almost anytime. Today it actually came in with a broken alternator belt which I'm not sure if that is the belt that was making noise to begin with. I have cleand the pulleys, shimm...
2005 Kia Rio 1.6L Electronic VIN: KNADC12535
Just got this car in. Vehicle is in fail safe (3rd gear). Speedometer inop as well as trans range indicator in cluster. I found the key on 12v to the tcm was low (1.6v). I dug through the harness for a while and couldnt find out where the bad spot was. I jumpe...
1996 Mazda Protege DX 1.5L Alt Belt VIN: JM1BB1416T
The alt belt will come off. The belt will get cut it is the 2end belt in .the car will come in with the alt belt missing.the ps will be on & ok .replaced alt belt clean & tighten crank bolt run car .
2000 Mazda 626 ES 2.0L engine VIN: 1YVGF22CXY
This car has a rough Idle ONLY when the A/C is in the on position. When the compressor is first turned on, the engine will nearly stall, idle speed goes down to 425rpm. When compressor cycles off, customer feels fine inside car. When the compressor cycles back...
2007 Mazda 3 S 2.3L No Start, Stall VIN: JM1BK32367
This vehicle will continue cranking and not start. If you bump the starter a couple of times, it will start and run for about 2 sec. then quit like you shut the key off. the cam timing seems good and has 180 psi on all cyl. Has good spark and fuel pressure cra...
2006 Mercedes-Benz S500 5.0L lighting & chargeing VIN: WDBNG75J36
We have a tough one for us, this came in with a charging problem warning on dash,we tested the alt. had no out put. Replaced the alt, the charging light went out but we lost the air ride and also the drivers side low beam. We scanned the system and it stated r...
2008 Mitsubishi Lancer Evolution MR 2.0L New TC-SST Problem VIN: CZ4A000648
Hi guy,i have a 2008 mitsubishi EVO X JDM model TC-SST problem.Chassis no CZ4A-0006484.The car came in with no communication to TC-SST control module,currently i'm using MUT 3 version [...]-00. After replaced TC-SST control module,the car can communicate w...
2007 Nissan Sentra SE-R Spec V 2.5L Poor Idle Quality, Surge VIN: 3N1CB61EX7
i have been over this one again and again and some insight on this would be greatly appreciated. vehicle came in with an erratic idle like it is hunting for the proper idle (similar to what a honda does) it had one code in it a p0335 crankshaft position sensor...
1995 Toyota 4Runner SR5 3.0L Timing Belt VIN: JT3BN29V5S
A previous shop did a tbelt replacement and when the truck wound up at our doorstep the belt had walked forward and been chewed until it jumped time. We redid the job using a gates master tbelt kit. The truck is now back a couple of months later with the belt ...
1996 Toyota Tacoma DLX 3.4L Hard Steering Wheel VIN: 4TAWN72N3T
Customer brought his truck with hard steering, he already replaced the power steering pump and rack and pinion assembly, after replacing this parts still hard to move the steering, no changes with this replacement.
1997 Volkswagen EuroVan Camper 2.8L Ignition system VIN: WV2EH8703V
Vehicle came in running rough. Pulled codes found cyclinder 2 & 5 were missing. Pulled wire off coil and there was no spark. Found that those cylinders are companion cylinders. Removed coil to test on bench. Resistance of plug 2 & 5 were out of spec. Tested ne...
2003 Volkswagen Jetta TDI 1.9L Wipers VIN: 3VWSP69M23
Wipers will not operate on intermittent and low speed setting at times. It will work when lever in pushed down and held, where it runs at low speed, works and parks ok. High speed works fine. Also when in the intermittent mode and not working, the time adjustm...
2007 Volkswagen Touareg 3.6L Booster VIN: WVGZE77L27
Need help VW experts out there. This Touareg has an intermittent lack of brake boost that happens only early in the morning when the customer is backing out of her steep driveway (I was never able to duplicate complaint). she complains of having to use too muc...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2004 Audi A4 Quattro Avant 1.8L enigne temp VIN: WAUVC68E44
First off thanks for all the replies. I was waiting for the customer to drive the vehicle for a few days to be sure the problem was gone. I ended up replacing the cooling fan control module and both cooling fans. I beleive either the fans took out the control ...
2001 BMW 740i 4.4L Mechanical VIN: WBAGG83441
well, the bossman has decided against digging any futher into this noise for now. thanks for the replies. the general consensis was replace the t-chains and guides as well as rebuild/replace the cam adjustment unit. with the amount of oil(or lack of) in said a...
2002 BMW 325Ci 2.5L brake lites VIN: WBABN334X2
Thank You all you great Tech's of IATN, All your information guided me to the "Final Answer". It seems that the L.S.C.C.U. is feed by the L terminal(violet wire) of the ignition switch and when this power feed drops below 5 volts all hell is created. It actual...
1990 Chevrolet R1500 Suburban Silverado 5.7L 1-2 shift VIN: 1GNER16K1L
FIXED FIXED FIXED,, ok first i wanna thank all u guys who i was emailing back and forth. so i removed the old seperator plate i noticed the 2nd feed hole check ball seat was **ucked. it was new GM plate too. with only 10,000 miles on it,also using steel check ...
1997 Chevrolet Monte Carlo LS 3.1L ignition VIN: 2G1WW12M4V
i have replaced both crank sensors with gm parts then replaced the pcm with a reman unit. the scanner now shows an rpm reading but will backfire like it is out of time.
2001 Chevrolet Impala LS 3.8L Cuts out, Stall VIN: 2G1WH55K61
After all testing, I went back to the original code and replaced the MAF sensor. Customer picked up vehicle and drove it for a week or so with no problems. They came in and paid the final bill and haven't heard from them since. I have no idea why the MAF se...
2005 Chevrolet Colorado Z85 2.8L Misfire VIN: 1GCCS14855
Replaced complete cyl. head w/ a new gm cyl head. Runs great thanks for all the help.It was a valve not completely seating. Trouble codes: P0303.
2007 Chevrolet Silverado 1500 Classic LT 5.3L transfer case electrical?? VIN: 2GCEK13Z77
Thanks for the help especially Bill. The problem was a broken wire going to the encoder motor in the harness. It was hard to find as when we checked for continuity it was always ok. The wire was "just making contact". Thanks for the help and advise ken
2007 Chevrolet Aveo LS 1.6L horn VIN: KL1TD56657
Thanks to everyone who posted a repair. I actually found another Aveo Notchback and listened with a stethescope for the relay. Located the relay inside the fuse box among other relays. The hatchback version of the Aveo has an external relay.
2002 Dodge Durango SLT Plus 5.9L stuck in 3rd gear VIN: 1B4HS58Z82
Thank you to all who replied.When checking wiring from PCM to Solenoids I found the PCM to be a reman unit.So checking signal from PCM to gov solenoid was acting wrong .Would energize then stop energizing then would .So went with a new PCM and problem fixed.
2005 Dodge Grand Caravan SXT 3.8L MIL Lamp on VIN: 2D8GP44L85
Thanks for all your help, got A proper reading from rear O 2 sensor in OBD 2 on scanner, replaced the convertor and all is well Larry Trouble codes: P0420.
1997 Ford Expedition Eddie Bauer 4.6L No Start VIN: 1FMEU18WXV
Just a quick Thank you to all that responded to my request for help. Some were helpful, some were not. The major consciences seemed to think that I needed to go back to the basics. So I restart my diag from scratch and came up with these results, MAF sensor... Trouble codes: B1600 (Ignition Key Transponder signal not recieved), B1602 (Invalid format key code from ignition key transponder).
2000 Ford Mustang 3.8L transmission VIN: 1FAFP4045Y
Thanks to all who helped, was a combo problem, trans main shaft and t o bearing.Installed used t5 trans and new t.o. bearing,now fixed.
2006 Ford Explorer Limited 4.6L No Charge VIN: 1FMEU75866
Two of the things in this trade I hate are broken new parts and poor service information. On the first, I got a used alternator instead of the lovely Motorcraft reman (which, coincidentally, does NOT say Motorcraft on the rebuilders label) and it now charge...
2008 Ford Taurus SEL 3.5L Fuel Gauge VIN: 1FAHP24W58
Thanks for all the info. I finally got this one figured out. This was a recently purchased used car. I ended up taking this one to the dealer and all they did was reflash the instrument cluster with the current as built data. Apparently the cluster was replace...
2005 Honda Odyssey EX 3.5L Surge, Cuts out, MIL Lamp on VIN: 5FNRL38735
Good Morning and thanks to all that replied. We found the oil pressure switch unplugged, and found the van runs fine untill sitting at an idle for about 4 mins. Then the computer commands the engine to go into the cylinder management system and starts shutting... Trouble codes: P2647.
2000 Isuzu Rodeo S 2.2L cyl # 3 0 compression VIN: 4S2CK58D4Y
thanks for all the help. we moved the lifters from cyl 3 to cyl 1 and the compression went to 180psi on cyl 3 and 0 on cyl 1. so turned the lobes on the cam down to compress the lifter on cyl 1 now and let it sit for 2 hours that way. then rechecked and all ...
2004 Lexus GX470 4.7L ABS pump VIN: JTJBT20X44
All who replied are inclined to do the full job rather than replace just the leaking pump. Their informed experience leads them to conclude that doing the job half way is likely to turn around and bite us. My overall wrenching (and management!) experience le...
2002 Mercury Sable LS Premium 3.0L High Idle VIN: 1MEHM55S62
Hello IATN. Thanks to everyone who replied. Sorry for the delayed update but i wanted to insure all was good. Like a few of you had mentioned it was a PCV Valve that was causing the high idle. The old PCV valve wasn't stuck open or closed but it didn't rat...
2007 Mini Cooper 1.6L Misfire, MIL Lamp on VIN: WMWMF33597
The problem with this car was the control unit, watching the injection signal on # 3 while at idle the signal would be a between 36 and 48 ms, when the signal got to 3ms the car would idle rough misfire. This was measured right out of the computer, replaced t...
2003 Oldsmobile Alero GLS 3.4L Starting VIN: 1G3NF12E13
Found A/C clutch relay bad. customer took car three weaks ago. report is that all is well. Thanks
1998 Plymouth Grand Voyager Expresso 3.3L Steering VIN: 1P4GP44G3W
Well it is not tires and there is no bad front end parts on this alignment done and check at 3 places. Tire rotated, swaped side to side front to back and inside out and still pulls left. You really notice the pull on the E-way when you are doing 70mph.
2004 Pontiac GTO 5.7L 4th gear VIN: 6G2VX12G24
Thanks for the replies. I replaced the AFL valve with the Sonnax valve and replaced both shift solenoids problem solved trans works great.
1994 Toyota Pickup SR5 3.0L MIL Lamp on VIN: JT4VN13G6R
Thanks everyone for your input . With all the inspections and testing I did passing , even replacing shielded wire . Finally decided to "Replace Known Good Components" and replace the PCM . When replacing even did a pinout test of both PCM's and compared read... Trouble codes: 52 (Knock sensor).
2003 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSK69MX3
thank you all for repliying, i did find the connector, it was on the left side under the panal. and pink in color.
2006 Volkswagen Passat 3.6 3.6L code poo16 timing VIN: WVWEU93C96
I removed valve cover and inspected, cam position was was not lined up with crank at TDC. I replaced the timing chain, guides, sprockets, tensioner and oil pump bolt. In process of doing so found that the intake cam sprocket (VVT) was seized. This is why the c...
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